增强波形插值编码在4 kbps

1999 IEEE Workshop on Speech Coding Proceedings. Model, Coders, and Error Criteria (Cat. No.99EX351) Pub Date : 1999-06-20 DOI:10.1109/SCFT.1999.781494

O. Gottesman, A. Gersho

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引用次数: 17

摘要

提出了一种速度为4kbps的增强型波形插值语音编码器。该系统集成了新的特性，如色散相位的合成分析(AbS)矢量量化(VQ)、慢演变波形的AbS优化(SEW)、过渡的特殊音高搜索以及切换预测合成分析增益VQ。主观质量测试表明，它超过了MPEG-4的4 kbps和G.723.1的5.3 kbps，略好于G.723.1的6.3 kbps。

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Enhanced waveform interpolative coding at 4 kbps

This paper presents an enhanced waveform interpolative (EWI) speech coder at 4 kbps. The system incorporates novel features such as analysis-by-synthesis (AbS) vector-quantization (VQ) of the dispersion-phase, AbS optimization of the slowly evolving waveform (SEW), a special pitch search for transitions, and switched-predictive analysis-by-synthesis gain VQ. Subjective quality tests indicate that it exceeds that of MPEG-4 at 4 kbps and of G.723.1 at 5.3 kbps, and it is slightly better than that of G.723.1 at 6.3 kbps.

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来源期刊

1999 IEEE Workshop on Speech Coding Proceedings. Model, Coders, and Error Criteria (Cat. No.99EX351)

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